![Bark staining on coast live oak caused by larvae of the goldspotted oak borer. [Photo by Tom Coleman, USDA Forest Service]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/34690small.jpg)
Goldspotted oak borer. First identified in eastern San Diego County in 2004, the goldspotted oak borer, Agrilus auroguttatus, has killed over 25,000 California native red oaks since its arrival and has now been detected in Riverside County. Larvae feed deep within the phloem, and adults are rarely seen. Infestations are recognized by the presence of D-shaped exit holes on trees, often accompanied by bark staining and crown decline. There are currently no good ways to manage the pest in moderate to severely infested trees. Contact your agricultural commissioner if you find infestations outside the known infested area.
For more information on this pest, infestation zones, and ways you can help limit the...
![Citrus fruit. [J.K. Clark]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/34471small.jpg)
News release from the California Department of Food and Agriculture (CDFA)
February 3, 2016 - Two additional trees in San Gabriel have tested positive for Huanglongbing. The two trees, an orange and a kumquat, are on separate properties but are both within the core area in San Gabriel where 10 diseased trees were confirmed last summer. Given the close proximity, there will not be a quarantine expansion.
One of the HLB-positive trees has already been removed and California Department of Food and Agriculture officials are in the process of contacting the other homeowner to schedule tree removal. Agriculture officials are working quickly in the area.
![Asian citrus psyllid and nymphs. [Photo by M.E Rogers]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/34313small.jpg)
News release from the California Department of Food and Agriculture (CDFA)
January 28, 2016 – A new portion of Stanislaus County has been placed under quarantine for the Asian citrus psyllid (ACP) following the detection of one ACP within the City of Oakdale. The quarantine zone measures 133 square miles, bordered on the north by E Sonora Road; on the south by Milnes Road; on the west by Stanislaus County Boundary; and on the east by Oakdale Irrigation District South Main Canal. Maps for the new quarantine area in Oakdale and the existing quarantine area in Turlock in are available
![Argentine ant.[J. K. Clark]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/34194small.jpg)
Seeing ants inside your house lately? As Californians enjoy the long-awaited rainfall, something linked to rain is not as welcome: ants.
Ants often enter buildings seeking food and water, warmth and shelter, or refuge from dry, hot weather or flooded conditions. They may appear suddenly in buildings if other food sources become unavailable or weather conditions change.
One such ant we see headed indoors during rainy conditions in California, is the Argentine ant. The Argentine ant is about 1/8 of an inch long and dull brown in color. It's normally found living in the landscape in shallow nests, and might even be living just outside your building. When rainy weather floods their nest, Argentine ants may use your home or...
- Author: Niamh Quinn
![Western gray squirrel. [K.A. Cabrera]](https://ucanr.edu/blogs/UCIPMurbanpests/blogfiles/33863small.jpg)
[From the November 2015 issue of the UC IPM Retail Nursery and Garden Center IPM News]
Read Part 2 of this article.
California is home to several species of squirrels, which can be divided into three groups: tree squirrels, ground squirrels, and flying squirrels.
Ground squirrels have been identified as the most common vertebrate pest in agricultural areas, but...
